/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * expect a function to throw Error
 * @param actualValue
 * @returns {{pass: boolean, message: string}}
 */
function assertThrowError (actualValue, expected) {
  let result = false
  let err
  if (typeof actualValue != 'function') {
    throw new Error('actualValue is not a function')
  }
  try {
    actualValue()
    return {
      pass: result,
      message: ' An error is not thrown while it is expected!'
    }
  } catch (e) {
    err = e
  }

  if (err instanceof Error) {
    console.log(err.message)
    if (err.message == expected[0]) {
      result = true
    }
  }
  return {
    pass: result,
    message: 'expected throw failed , ' + err.message + ' is not ' + expected[0]
  }
}

export default assertThrowError
